CN100378485C - Projecting lens assembly and its reflection unit - Google Patents
Projecting lens assembly and its reflection unit Download PDFInfo
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- CN100378485C CN100378485C CNB2005100749868A CN200510074986A CN100378485C CN 100378485 C CN100378485 C CN 100378485C CN B2005100749868 A CNB2005100749868 A CN B2005100749868A CN 200510074986 A CN200510074986 A CN 200510074986A CN 100378485 C CN100378485 C CN 100378485C
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- pressing portion
- lens group
- projection lens
- framework
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Abstract
The present invention relates to a projecting lens assembly and a reflecting unit thereof, the reflecting unit comprises a bearing element, a frame and a reflecting element, wherein the frame is connected with the bearing element and is provided with a first pressing part and a second pressing part, the first pressing part and the second pressing part are respectively arranged at both corresponding sides of the frame; the reflecting element is arranged between the bearing element and the frame, so that the first pressing part and the second pressing part are pressed on a surface of the reflecting element.
Description
Technical field
The invention relates to a kind of projection lens group and reflector element thereof, be meant a kind of projection lens group and reflector element thereof that is applied to image projecting system especially.
Background technology
Because under the multiple demand of big display area, miniaturization and lightweight system, image projecting system becomes one of subitem the most popular in the present opto-electronics.Optical projection system on the market is divided into the three major types type haply at present, be respectively LCD projecting system (Liquid Crystal Display, LCD), monocrystalline silicon LCD projecting system (Liquid Crystal on Silicon, LCOS) and digital light processor optical projection system (Digital Light Processing, DLP), wherein, DLP is owing to have high brightness, correct color reproducibility, reaction time, no noise and advantage such as compact fast, thereby becomes one of optical projection system of present a new generation hot topic.
As shown in Figure 1, known DLP formula optical projection system 1 is that employing is digital control, and utilize the reflected light principle, focus on via lens 12 after will gathering from the light of light source 11, after passing the colored filter 13 of redgreenblue again, be projected to digital micro-mirror wafer (Digital Micro-mirror Device, DMD) on 14, have many small movable lens on the digital micro-mirror wafer 14, via drive electrode control movable lens angle of inclination and deflection period, the switches light reflection enters projection lens group 15, and projection lens group 15 generally is to comprise the plural pieces lens, it is arranged in pairs or groups usually and uses a catoptron 151 to make light ray bending, is projected to screen 16 imagings by catoptron 151 change light path relief light amplify through lens.
Wherein, digital micro-mirror wafer (DMD) the 14th is used for replacing in traditional liquid crystal projector, be responsible for presenting the liquid crystal panel of image, it is a very high-accuracy technology, as shown in Figure 2, digital micro-mirror wafer (DMD) the 14th is made of CMOS SRAM memory cell 141 and small movable lens 142, each movable lens 142 is equivalent to a picture element (Pixel), and each movable lens 142 can both reflect away light from both direction, reflection direction is then decided on the memory cell 141 of movable lens 142 bottoms, for instance, when memory cell 141 is in " ON " state, movable lens 142 can rotate to+12 degree, if memory cell 141 is in " OFF " state, movable lens 142 can rotate to-12 degree, the variation of mat movable lens 142 anglecs of rotation and incident light reflection entered (ON) or leave the incidence hole of (OFF) projection lens group 15, digital micro-mirror wafer 14 (DMD) is made up of more than 130 ten thousand movable lens 142 approximately, the about 17um of each movable lens 142 size, and the about 1.0um in gap of 142 of movable lens.Yet, though the crack is very narrow and small between 142 of the movable lens, can be when the projection image show, this gap given amplify and produce longitudinal stripe and travers, and then cause image smoothly smooth and easy inadequately, and influence the imaging quality of whole image.Be known as at present and solve the above problems, can a vibration unit (figure does not show) be set at catoptron 151 and make catoptron 151 produce microvibrations,, make image smoothly smooth and easy, promote the imaging quality of whole image in order to eliminate longitudinal stripe and travers.Because optical projection system 1 is a optical system for superprecision, so the flatness of catoptron 151 requires in 1/2 λ, if when the flatness of catoptron 151 is not good, the image that projects may produce the problem of torsional deformation, will have a strong impact on whole imaging quality.
Again, please refer to shown in Figure 3, known catoptron 151 is in order to be fixed on the pedestal (figure does not show) by a framework 152, this framework 152 is by the surface of three salient points 1521 with conflict catoptron 151, so that catoptron 151 is fixed on the pedestal, and framework 152 is locked on the pedestal by several latch members 153.At present in assembling frame 152 and catoptron 151 processes, because framework 152 is by salient point 1521 conflict fixation reflex elements 151, therefore three salient points 1512 that often face framework in whole assembling process problem of conflict catoptron 151 of can't evenly exerting pressure simultaneously, this measure will cause the flatness of catoptron 151 not good, make the flatness of catoptron 151 can't reach in 1/2 λ, and cause whole imaging quality to descend.
How therefore a kind of projection lens group and reflector element thereof are provided, produce to solve the not good situation of flatness that causes catoptron in the reflector group process of assembling easily, real is one of important topic of present industry.
This shows that above-mentioned existing projection lens group and reflector element thereof obviously still have inconvenience and defective, and demand urgently further being improved in structure and use.In order to solve the problem that projection lens group and reflector element thereof exist, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing projection lens group and reflector element thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of projection lens group and reflector element thereof of new structure, can improve general existing projection lens group and reflector element thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing projection lens group and reflector element thereof exist, and a kind of projection lens group and reflector element thereof of new structure are provided, technical matters to be solved is to make the preferable flatness of acquisition in the reflector group process of assembling, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.The reflector element of a kind of projection lens group that proposes according to the present invention, it comprises: a holding element; One framework, it is to link with this holding element, and it has one first pressing portion and one second pressing portion, and this first pressing portion is arranged at corresponding two sides of this framework respectively with this second pressing portion; And a reflecting element, it is to be arranged between this holding element and this framework, making this first pressing portion and this second pressing portion is a surface that is pressed on this reflecting element.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The reflector element of aforesaid projection lens group, it more comprises at least one latch members, and it is to pass this framework also this reflecting element to be fixed on this holding element, and wherein this latch members is a screw.
The reflector element of aforesaid projection lens group, the wherein said first pressing portion and this second pressing portion are respectively a press strip, and wherein the section of this press strip is to be a v font or to be a circular arc.
The reflector element of aforesaid projection lens group, the wherein said first pressing portion and the second pressing portion are respectively an elasticity pressing portion.
The reflector element of aforesaid projection lens group, wherein said reflecting element are to be an eyeglass.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.According to a kind of projection lens group that the present invention proposes, it comprises: a barrel, and it is to have a through hole; An and reflector element, it is to be arranged in this through hole, this reflector element has a holding element, a framework, reaches a reflecting element, wherein this framework is to link with this holding element, it has one first pressing portion and one second pressing portion, this first pressing portion is arranged at corresponding two sides of this framework respectively with this second pressing portion, this reflecting element, it is to be arranged between this holding element and this framework, and making this first pressing portion and this second pressing portion is a surface that is pressed on this reflecting element.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid projection lens group, it more comprises at least one latch members, and it is to pass this framework also this reflecting element to be fixed on this holding element, and wherein this latch members is a screw.
Aforesaid projection lens group, it more comprises a vibration unit, and it is to be located in this through hole, and this vibration unit has a vibrating elements and a pedestal, and this vibrating elements and this holding element are arranged in this pedestal, to be fixed in this barrel.
Aforesaid projection lens group, wherein said vibrating elements are a voice coil motor.
Aforesaid projection lens group, the wherein said first pressing portion and this second pressing portion are respectively a press strip.
Aforesaid projection lens group, the section of wherein said press strip are to be a v font or to be a circular arc.
Aforesaid projection lens group, the wherein said first pressing portion and this second pressing portion are respectively an elasticity pressing portion.
Aforesaid projection lens group, wherein said reflecting element are to be an eyeglass.
By technique scheme, projection lens group of the present invention and reflector element thereof have following advantage at least:
Because according to projection lens group of the present invention and reflector element thereof, it is a surface that is pressed on reflecting element by the first pressing portion of framework and the second pressing portion, compare with known techniques, because the corresponding setting of the first pressing portion and the second pressing portion, and the first pressing portion is to contact for face with the second pressing portion with reflecting element, therefore the first pressing portion and the second pressing portion can evenly apply pressure to the surface of reflecting element in order to the pressing and fixing reflecting element, and can not influence the flatness of reflecting element, make reflecting element have good flatness, to reach best imaging quality.
In sum, the projection lens group and the reflector element thereof of special construction of the present invention, it has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on product structure or function, have large improvement technically, and produced handy and practical effect, and more existing projection lens group and reflector element thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a novelty, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram of known digital light processor optical projection system;
Fig. 2 is the synoptic diagram of known digital micro-mirror wafer;
Fig. 3 is the top view after known reflector element and the framework assembling;
Fig. 4 is the stereographic map of the framework of preferred embodiment of the present invention;
Fig. 5 is the cut-open view of the dotted line a-a ' among Fig. 4;
Fig. 6 is the synoptic diagram of the reflector element of preferred embodiment of the present invention;
Fig. 7 is the arrange in pairs or groups synoptic diagram of the common start of a vibration unit of the reflector element of preferred embodiment of the present invention; And
Fig. 8 is the synoptic diagram of the projection lens group of preferred embodiment of the present invention.
1:DLP formula optical projection system 11: light source
12: lens 13: colored filter
14: digital micro-mirror wafer 141: memory cell
142: movable lens 15: the projection lens group
151: catoptron 152: framework
1521: salient point 153: latch members
16: screen 2: reflector element
21: holding element 211: screw
22: 221: the first pressing portions of framework
222: the second pressing portions 223: hole
23: reflecting element 24: latch members
3: projection lens group 31: barrel
311: through hole 32: vibration unit
321: vibrating elements 322: pedestal
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to projection lens group and its embodiment of reflector element, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Hereinafter with reference to correlative type, projection lens group and reflector element thereof according to preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference marks.
See also Fig. 4, Fig. 5 and shown in Figure 6, be respectively the stereographic map of framework of preferred embodiment of the present invention and the cut-open view of dotted line a-a ', and the synoptic diagram of the reflector element of preferred embodiment of the present invention.
In this preferred embodiment, holding element 21 is in order to bearing frame 22 and reflecting element 23.Framework 22 is a tetragonal framework and links with holding element 21 that this framework 22 has one first pressing portion 221 and one second pressing portion 222.The first pressing portion 221 is arranged at the dual side-edge that framework 22 is faced mutually respectively with the second pressing portion 222, and the first pressing portion 221 and the second pressing portion 222 be respectively an elasticity pressing portion, and both are a strip press strip.
In this preferred embodiment, the first pressing portion 221 and both sections of the second pressing portion 222 are to be a v font.Though the section of the first pressing portion 221 shown in the figure and the second pressing portion 222 is to be a v font, be not limited thereto, both sections also can be a circular arc or other irregular curves.
Reflecting element 23 is to be an eyeglass, and reflecting element 23 is to be arranged between holding element 21 and the framework 22, and the first pressing portion 221 and the second pressing portion 222 are pressed on the surface of reflecting element 23 just.
The latch members 24 of this preferred embodiment can be a screw, and holding element 21 offers corresponding a plurality of screw 211 and framework 22 also offers corresponding a plurality of hole 223, when latch members 24 passes hole 223 and by screw 211 framework 22 is fixed on the holding element 21, this moment reflecting element 23 also by the first pressing portion 221 of framework 22 and the second pressing portion, 222 pressing and fixing on holding element 21.
When the reflector element 2 of preferred embodiment of the present invention is assembled, a plurality of latch members 24 are passed corresponding hole 223 respectively, by screw 211 framework 22 is fixed on the holding element 21, moreover, reflecting element 23 by the first pressing portion 221 of framework 22 and the second pressing portion, 222 pressing and fixing on holding element 21, because the first pressing portion 221 and the second pressing portion 222 are respectively an elastic layering, and be arranged at the corresponding dual-side of framework, therefore in reflector element 2 assembling process, the first pressing portion 221 is to contact for face with the second pressing portion 222 with reflecting element 23, can evenly apply pressure to reflecting element 23 with pressing and fixing reflecting element 23, can be so that reflecting element 23 has good flatness, to present best imaging quality.
Again, see also shown in Figure 7ly, be the synoptic diagram of the reflector element 2 collocation one vibrations common start in unit of preferred embodiment of the present invention.Wherein, vibration unit 32 has a vibrating elements 321 and a pedestal 322.Vibrating elements 321 and holding element 21 are arranged in the pedestal 322.In this preferred embodiment, vibrating elements 321 is to be a voice coil motor, produces small vibrations in order to drive reflector element 2.
Again, see also shown in Figure 8ly, be the synoptic diagram of the projection lens group of preferred embodiment of the present invention.Projection lens group 3 comprises a barrel 31, a vibration unit 32 and a reflector element 2.Wherein, reflector element 2 and vibration unit 32 give the same-sign title as aforesaid reflector element 2 and vibration unit 32 at this, and are not given unnecessary details.Barrel 31 has a through hole 311.At this, vibrating elements 321 is arranged in the pedestal 322 with holding element 21, pedestal 322 is fixed in the through hole 311, so that reflector element 2 and vibration unit 32 are fixed in the barrel 31 again.Make it produce microvibration in order to do making vibrating elements 321 drive reflector element 2, can make image smoothly smooth and easy, promote the imaging quality of whole image in order to longitudinal stripe and the travers eliminated as known digital micro-mirror wafer is produced.
From the above, because of foundation projection lens group of the present invention and reflector element thereof, it is a surface that is pressed on reflecting element by the first pressing portion of framework and the second pressing portion, compare with known techniques, because the corresponding setting of the first pressing portion and the second pressing portion, and first pressing portion and the second pressing portion be elasticity pressing portion, and the first pressing portion is to contact for face with the second pressing portion with reflecting element, therefore the first pressing portion and the second pressing portion can evenly apply pressure to the surface of reflecting element in order to the pressing and fixing reflecting element, and can not influence the flatness of reflecting element, make reflecting element have good flatness, to reach best imaging quality.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the structure that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (15)
1. the reflector element of a projection lens group is characterized in that it comprises:
One holding element;
One framework, it is to link with this holding element, and it has one first pressing portion and one second pressing portion, and this first pressing portion is arranged at corresponding two sides of this framework respectively with this second pressing portion; And
One reflecting element, it is to be arranged between this holding element and this framework, making this first pressing portion and this second pressing portion is a surface that is pressed on this reflecting element.
2. the reflector element of projection lens group according to claim 1 is characterized in that it more comprises at least one latch members, and it is to pass this framework also this reflecting element to be fixed on this holding element.
3. the reflector element of projection lens group according to claim 2 is characterized in that wherein said latch members is a screw.
4. the reflector element of projection lens group according to claim 1 is characterized in that the wherein said first pressing portion and this second pressing portion are respectively a press strip, and wherein the section of this press strip is to be a v font or to be a circular arc.
5. the reflector element of projection lens group according to claim 1 is characterized in that the wherein said first pressing portion and the second pressing portion are respectively an elasticity pressing portion.
6. the reflector element of projection lens group according to claim 1 is characterized in that wherein said reflecting element is to be an eyeglass.
7. projection lens group is characterized in that it comprises:
One barrel, it is to have a through hole; And
One reflector element, it is to be arranged in this through hole, this reflector element has a holding element, a framework, reaches a reflecting element, wherein this framework is to link with this holding element, it has one first pressing portion and one second pressing portion, and this first pressing portion is arranged at corresponding two sides of this framework, this reflecting element respectively with this second pressing portion, it is to be arranged between this holding element and this framework, and making this first pressing portion and this second pressing portion is a surface that is pressed on this reflecting element.
8. projection lens group according to claim 7 is characterized in that it more comprises at least one latch members, and it is to pass this framework also this reflecting element to be fixed on this holding element.
9. projection lens group according to claim 8 is characterized in that wherein said latch members is a screw.
10. projection lens group according to claim 7, it is characterized in that it more comprises a vibration unit, it is to be located in this through hole, and this vibration unit has a vibrating elements and a pedestal, this vibrating elements and this holding element are arranged in this pedestal, to be fixed in this barrel.
11. projection lens group according to claim 10 is characterized in that wherein said vibrating elements is a voice coil motor.
12. projection lens group according to claim 7 is characterized in that the wherein said first pressing portion and this second pressing portion are respectively a press strip.
13. projection lens group according to claim 12, the section that it is characterized in that wherein said press strip are to be a v font or to be a circular arc.
14. projection lens group according to claim 7 is characterized in that the wherein said first pressing portion and this second pressing portion are respectively an elasticity pressing portion.
15. projection lens group according to claim 7 is characterized in that wherein said reflecting element is to be an eyeglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100749868A CN100378485C (en) | 2005-06-06 | 2005-06-06 | Projecting lens assembly and its reflection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100749868A CN100378485C (en) | 2005-06-06 | 2005-06-06 | Projecting lens assembly and its reflection unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877382A CN1877382A (en) | 2006-12-13 |
| CN100378485C true CN100378485C (en) | 2008-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100749868A Expired - Fee Related CN100378485C (en) | 2005-06-06 | 2005-06-06 | Projecting lens assembly and its reflection unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100378485C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738699B (en) * | 2008-11-14 | 2012-10-17 | 深圳富泰宏精密工业有限公司 | Pressing device |
| CN108776379A (en) * | 2018-06-25 | 2018-11-09 | 青岛海信激光显示股份有限公司 | A kind of closing light mirror bearing structure and projection arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11202409A (en) * | 1998-01-14 | 1999-07-30 | Victor Co Of Japan Ltd | Projector device |
| JP3224854B2 (en) * | 1992-05-13 | 2001-11-05 | 株式会社日立製作所 | Mirror device for rear projection type projector |
| US20050057729A1 (en) * | 2003-09-16 | 2005-03-17 | Junejei Huang | Digital light processing projector |
-
2005
- 2005-06-06 CN CNB2005100749868A patent/CN100378485C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3224854B2 (en) * | 1992-05-13 | 2001-11-05 | 株式会社日立製作所 | Mirror device for rear projection type projector |
| JPH11202409A (en) * | 1998-01-14 | 1999-07-30 | Victor Co Of Japan Ltd | Projector device |
| US20050057729A1 (en) * | 2003-09-16 | 2005-03-17 | Junejei Huang | Digital light processing projector |
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| Publication number | Publication date |
|---|---|
| CN1877382A (en) | 2006-12-13 |
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